516403444 has 6 divisors (see below), whose sum is σ = 903706034. Its totient is φ = 258201720.

The previous prime is 516403421. The next prime is 516403457. The reversal of 516403444 is 444304615.

It can be written as a sum of positive squares in only one way, i.e., 515744100 + 659344 = 22710^2 + 812^2 .

It is a super-2 number, since 2×516403444² = 533345033950122272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64550427 + ... + 64550434.

Almost surely, 2^516403444 is an apocalyptic number.

It is an amenable number.

516403444 is a deficient number, since it is larger than the sum of its proper divisors (387302590).

516403444 is a wasteful number, since it uses less digits than its factorization.

516403444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129100865 (or 129100863 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 516403444 is about 22724.5119639565. The cubic root of 516403444 is about 802.2869167022.

The spelling of 516403444 in words is "five hundred sixteen million, four hundred three thousand, four hundred forty-four".